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Full Discussion: Help with finding the exit status of a 'nohup' command using 'PID'.
Top Forums Shell Programming and Scripting Help with finding the exit status of a 'nohup' command using 'PID'. Post 302917691 by SriRamKrish on Thursday 18th of September 2014 08:38:23 AM
Old 09-18-2014
Help with finding the exit status of a 'nohup' command using 'PID'.
Hello All,

I need to run a set of scripts, say 50 of them, parallely. I'm running these 50 scripts, from inside a script with the help of 'nohup' command.

1.The fifty scripts are stored in a separate file.
2.In a master script, i'm reading every line of the file through loop and executing them.
3.The master script should succeed, if and only if, all the 50 scripts that has been called succeeds. Or else should fail.(Exit 0)

So far, this is what i have tried :

Code:
 
failcount=0
passcount=0
 
while read line; do
nohup sh $line &
PID=$(echo $!)
wait $PID
status=$(echo $?)

if [ $status -eq 100 ]
        then
        echo "Script FAILED." >> ${logfile}
        failcount=$((failcount+1))
elif [ $status -eq 0 ]
        then
        echo "Script SUCCEEDED." >> ${logfile}
        passcount=$((passcount+1))
fi
done < /$PATH/script.txt
 
if [ $failcount -gt 0 ]
        then
        echo "FAILURE!" >> ${logfile}
        exit 1
else
        echo "SUCCESS!" >> ${logfile}
        exit 0
fi

But this runs the scripts sequentially and NOT parallely. I need to start all the scripts parallely using nohup(or any other means if possible) and should be able to track their exit status individually.

Kindly help.

Cheers.
Last edited by vbe; 09-18-2014 at 09:44 AM..
 

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LEARN ABOUT OPENDARWIN

nohup

NOHUP(1)						    BSD General Commands Manual 						  NOHUP(1)

NAME

     nohup -- invoke a utility immune to hangups

SYNOPSIS

     nohup [--] utility [arguments]

DESCRIPTION

     The nohup utility invokes utility with its arguments and at this time sets the signal SIGHUP to be ignored.  If the standard output is a ter-
     minal, the standard output is appended to the file nohup.out in the current directory.  If standard error is a terminal, it is directed to
     the same place as the standard output.

     Some shells may provide a builtin nohup command which is similar or identical to this utility.  Consult the builtin(1) manual page.

ENVIRONMENT

     The following variables are utilized by nohup:

     HOME  If the output file nohup.out cannot be created in the current directory, the nohup utility uses the directory named by HOME to create
	   the file.

     PATH  Used to locate the requested utility if the name contains no '/' characters.

DIAGNOSTICS

     The nohup utility exits with one of the following values:

     126     The utility was found, but could not be invoked.

     127     The utility could not be found or an error occurred in nohup.

     Otherwise, the exit status of nohup will be that of utility.

SEE ALSO

     builtin(1), csh(1), signal(3)

STANDARDS

     The nohup utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

BUGS

     Two or more instances of nohup can append to the same file, which makes for a confusing output.

BSD
								   July 19, 2001							       BSD
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